Strainer for driven wells.



A. D. COOK.

STRAINBR FR URIVEN WELLS.

PPLLUA'MON Umm Mmm, wu

Patented Nov. 18, 1913.

@/Vmmdm 'UNQHTED hilllrilillhlt?,

AUGUST D. COUR USF L LV/.ltENCEI-URG, INDIANit..y

ernennen ron unir/nu Wette.

Lumens.

totnnted il! ot'. i. rf., '4E-ll IES.. Serial No. 613,560.

-well tubes, whereby such :t strainer in provided which is not only very elieient in use, but one 'which Will not; be liable to be injured or destroyed in the process of driving, or he come filled u or clogged with the dirt, or other materia find thus rendered ineilieient, all as will be hereinafter more fully described and claimed.

Referring to the accompanying drawings, which are made a art hereof and on which similar reference characters indicate similar l parts, Figure l is a., side elevation of the lower end of a Well tube rovided 'with the strainer of my improved drmfliig. 3 e central vertical section of the same indicating the tube as in the bottom of a well, Fig. El e View similar to Fig. l showing a mi, lifed form, Fig. L a View showing Said n'iodiiiod i'o'rm as in uselin the Well, and F 5, (S and 7 detail views illustrating,7 the form of parte on an enlarged scale.

In said drawings the portions marin-fd .d represent the well tube, B the lower perforated section thereof, and C my improved strainer. The Well tube A and the porti rated section B on the lower end thereof nre of common form and require no special de seription. The strainer C is preferably composed of short sections ol brass tubing,r formed with a series of equi-distant pz allel slots and a series ot' internal cireUnifei'entinl l ribs c. Said internal ribs are formed by milling out the metal on the interior of the tube section between the ribs, by Casting, or

. yinusmy. other approved manner.

A. drive point B is mounted, by Ineens of a screw-threaded engagement, on the lower end of perforated section B and the sections of strainer C are slipped over said section B, the internal ribs c preferably litl ting snugly around the circumference of said section, leaving a free space. between the strainer C and section B equal to the thielrness of seid ribs. The sections of strainer! (l are clamped longitudinally between thel .drive point B and a screw-threaded ring it. which serves' ne a connection ire-tw section B and tube A, being aeree-Jeri the u nner' end of said section B and .hav the lower end of tube A ecrewzxi intein "i eonnecting the several ports, ne heeft :slr/,wr in Fig.. The sections enmposim ntran C are euch' elotted -longitazddn the :do ,1i/tending tn n depth te foi between the rihec, but not or nient depth to eut said ribs and thus ture. )Seid slots nur* 'be foi-ined with parallel sides ae shown in liig. C or nur have their sides tepel-ed to extend at i .slight :ingle away from each other .from iluf outside toward tie inside, ne shown in LJW i', and thus provide for the freeing of se, slots from dirt more readily.

In the structure shown in Figs. il and I the tube A islrst driven to the depth esired and then e .strainer composed ut la sce-tions C'2 and C, orfas many sections an" may be required, is dropped into the bottoni of the well when tube A` is lifted for 'the die tance necessary end serves aethe limer retion ot' the well tube as well es the strai: r. The lower section of Such a strainer .is eine Erefernbly filled with a screwthreznlml lool; c2, as shown. in such a Structure vhe strainer is mudo to slide snugly down the wel! ruhe and any length desired may -he provided by screwing the required .nuudim' of sections together, ns indicated in l?! i. ln :auch a structure, also, caeb section formed Solid at each end in order to nll'ru'd the ne( ry thickness to forni the interv engaging erre'.'r-tln'eaderfl ends and yn terre a smooth exterior to the strainer ne n whole. A lend packing ringr C3 is also preferably mounted on the top of the top Section und within the lower end ofi tube and a conical swage block forced into the top thereof in .spread the saine outwlrdly and form a Light joint to prevent sand and dirt from being such-ed into the tube through said joint.

lt will beunderstood that,while I have i i', Il (i lofn'ned by milling, 0r otherwlse,

' huhu' Sections,

jacent section, spondingy of narrow strips with slots beheld together vby ntegra bs: no cui; nui

portions of the interior O the @rgnn uas before described.

Having thus fully described my Said in' ventism what c'laun as naw and desfe to composed tween them secure )y Letters Paen, vis:

for d'fven wells compxsng ted and secured togethexj of metal havin--.

1. A strainer tubular Sections each made of a. singin piece a uniform smooth exteior, the solid and of one section against she solid @nd of the mi -eah section Ming smsreslott through the bny thene and formed with internal ngm 'b extending wcm/ss said slots9 substant set forth.

2.7132 dxwn WEE :1 Well tube? al, iowm 39 therein.; a anni n ad seam me www' and said D a et uasroun in tdl perform@ se non cumpmsa 

